Unplug the Roku device from power
Wait 10 seconds
Plug the Roku device back in
Restart from the Roku menu: Settings
Select System
Select Power
Select System restart
Confirm restart if prompted
If the Roku is frozen, unplug the TV or Roku TV from power
Wait 10 seconds
Plug it back in
If using the Roku mobile app, open the app
Tap Devices
Select your Roku device
Tap the remote icon
Go to Settings
Select System
Select Power
Select System restart